 /* 网页内容头部样式，包括标题以及导航栏 */
 .cs-main {
    background-color: #f5f8f9;
}

.cs-main .container {
    width: 1140px;
    margin: 0 auto;
}

.cs-main .cs-main-header {
    width: 100%;
    height: 170px;
    box-sizing: border-box;
    padding-top: 70px;
    display: flex;
    justify-content: space-between;
}

.cs-main-title {
    width: 275px;
    height: 60px;
}

.cs-main-title .title {
    width: 280px;
    height: 30px;
    font-size: 30px;
    color: #4f5457;
}

.cs-main-title .small-title {
    margin-top: 8px;
    color: #777b7e;
}

.cs-main .cs-main-nav {
    width: 470px;
    height: 60px;
    line-height: 60px;
}

.cs-main .cs-main-nav ul {
    display: flex;
    justify-content: space-between;
    position: relative;
}

.cs-main .cs-main-nav ul li {
    box-sizing: border-box;
    height: 50px;
    cursor: pointer;
}

.cs-main .cs-main-nav ul .line {
        position: absolute;
        bottom: 0;
        left: 1 0px;
        height: 3px;
        width: 70px;
        background-color: #cccfd0;
        border-radius: 2px;
}

